In Vivo Biocompatibility and Improved Compression Strength of Reinforced Keratin/Hydroxyapatite Scaffold.
10.1007/s13770-017-0083-9
- Author:
Jie FAN
1
;
Meng Yan YU
;
Tong da LEI
;
Yong Heng WANG
;
Fu Yuan CAO
;
Xiao QIN
;
Yong LIU
Author Information
1. Key Laboratory of Advanced Textile Composites, Ministry of Education, School of Textiles, Tianjin Polytechnic University, 399 West Binshui Road, Tianjin 300387, China. fanjie@tjpu.edu.cn, liuyong@tjpu.edu.cn
- Publication Type:Original Article
- Keywords:
Keratin;
Hydroxyapatite;
Scaffold;
Biomaterial;
Hair
- MeSH:
Animals;
Compressive Strength;
Durapatite;
Foreign-Body Reaction;
Freeze Drying;
Hair;
Humans;
Mice;
Nitrogen;
Porosity;
Spectroscopy, Fourier Transform Infrared;
Tissue Engineering
- From:
Tissue Engineering and Regenerative Medicine
2018;15(2):145-154
- CountryRepublic of Korea
- Language:English
-
Abstract:
A rapid freezing/lyophilizing/reinforcing process is suggested to fabricate reinforced keratin/hydroxyapatite (HA) scaffold with improved mechanical property and biocompatibility for tissue engineering. The keratin, extracted from human hair, and HA mixture were rapidly frozen with liquid nitrogen and then lyophilized to prepare keratin/HA laminar scaffold. The scaffold was then immersed in PBS for reinforcement treatment, and followed by a second lyophilization to prepare the reinforced keratin/HA scaffold. The morphology, mechanical, chemical, crystal and thermal property of the keratin/HA scaffold were investigated by SEM, FTIR, XRD, DSC, respectively. The results showed that the keratin/HA scaffold had a high porosity of 76.17 ± 3%. The maximum compressive strength and compressive modulus of the reinforced scaffold is 0.778 and 3.3 MPa respectively. Subcutaneous implantation studies in mice showed that in vivo the scaffold was biocompatible since the foreign body reaction seen around the implanted scaffold samples was moderate and became minimal upon increasing implantation time. These results demonstrate that the keratin/HA reinforced scaffold prepared here is promising for biomedical utilization.
